/*
 * (c) Copyright Ascensio System SIA 2010-2023
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
 * street, Riga, Latvia, EU, LV-1050.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */
/**
 *  NotificationCenter.js
 *
 *  A pub-sub object that can be used to decouple various parts
 *  of an application through event-driven architecture.
 *
 *  Created by Alexander Yuzhin on 1/21/14
 *  Copyright (c) 2018 Ascensio System SIA. All rights reserved.
 *
 */


/**
 *  Using:
 *
 *  Common.NotificationCenter.on("foo", function(){
 *      alert("bar");
 *  });
 *
 *  Common.NotificationCenter.trigger("foo"); // => alert box "bar"
 *
 */

if (Common === undefined)
    var Common = {};

define([
    'backbone'
], function (Backbone) {
    'use strict';

    var NotificationCenter = function(){};

    // Copy the basic Backbone.Events on to the event aggregator
    _.extend(NotificationCenter.prototype, Backbone.Events);

    if(typeof Common.NotificationCenter == 'undefined') {
        // Method to create new Common.NotificationCenter class
        NotificationCenter.extend = Backbone.Model.extend;

        Common.NotificationCenter = new NotificationCenter();
    }
    else {
        throw ('Native Common.NotificationCenter instance already defined.')
    }
});